Energy saving roofing materials

I have been wading through tons of info on asphalt roofing shingles for SW Florida. Lots of tech terms and info. Then I came across a site that indicates very small actual savings on so called energy efficient shingles. So now I am totally confused? Any input? JIm

Energy saving roofing materials

Really appreciate all the imput but at the moment I just need to figure out the best bang for the buck for a simple tearoff and shingle replacement job. Will not be doing anything exotic. Will post picture and ask about venting later. I think I see an issue there.

I guess the best question would be are the Energy Star/cool roof rated shingles worth the xtra cost?

Energy saving roofing materials

Thanks for the response!

Years on the internet and I never supply enough info

Cape Coral area FL. Roof is oriented in a northern direction with a 7/12 pitch, may be wrong on pitch? Cathedral ceilings in house with AC and duct work in attic space, using scissor truss's. Duct work looks good was probably replace with AC 7 years ago.

I have not closed on this house yet so am missing some info, but need to put on roof immediately upon closing or will lose insurance.

I do not have pic yet so will add link, showing picture of house. For the ridge vent should it be full length on the roof and should it be added to the garage? Soffit are perforated aluminum. I suspect that Lani (screened porch up north) in rear was added after construction and venting was blocked to attic, assuming they moved the aluminum soffit from house to lani.

If there will removing blocking to venting be adequate from lani to house?

Energy saving roofing materials

There's no way to put a true $$ to a roof shingle without knowing the specific house they are installed on. The lighter the color, the less UV will be absorbed, the less heat will be gained. This will result in slighty (and I mean slightly) lower temperatures within your attic that will result in slightly (again, slightly) lower heat gain within your ductwork. As hinted to above, proper venting of the attic space is more effective at latent heat control than the color of the shingle.

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Energy saving roofing materials

Reflective shingles won't be much savings at all, because if the attic space is a properly ventilated space the actual difference of thermal transfer from a black roof to a white roof is only 2 degree attic temperature. Key on the properly ventilated.

Sometimes the savings that comes from doing it yourself can be blown away with one mistake.
The information found in this post is not to be considered legal advice. All information should be considered relative, not specific. Never attempt any repairs you are not comfortable with. Always maintain safety! The author of this post takes no responsibility for any losses that occur. Use at your own risk.

Energy saving roofing materials

Yeah I like those vented nail base panels, I hit on that in link to the article I posted above. HOWEVER what we don't know is if this roof structure is a warm deck or cold deck design. If it is a cold deck design I can install R 30 blown ni fiberglass for the price of R 9 poly iso rigid insulation board. So converting it from cold deck to warm deck isn't really advised. In my opinion if the roof is currently a cold deck design it is much better to honor the original design, insulate the ceiling and insure proper attic ventilation.

If it is a warm deck design, then my opinion changes. I would opt for the vented nail base and opt for a reflective roofing shingle, and still proper ventilation. Though proper ventilation is harder to achieve with vented nail base in many cases.

Sometimes the savings that comes from doing it yourself can be blown away with one mistake.
The information found in this post is not to be considered legal advice. All information should be considered relative, not specific. Never attempt any repairs you are not comfortable with. Always maintain safety! The author of this post takes no responsibility for any losses that occur. Use at your own risk.